The thermophilic lactic acid bacterium Streptococcus thermophilus is widely and traditionally used in the dairy industry. Despite the vast level of consumption of S. thermophilus through yogurt or probiotic functional food, very few data are available about its physiology in the gastrointestinal tract (GIT). The objective of the present work was to explore both the metabolic activity and host r...

The spirochete Borrelia burgdorferi survives in its tick vector, Ixodes scapularis, or within various hosts. To transition between and survive in these distinct niches, B. burgdorferi changes its gene expression in response to environmental cues, both biochemical and physiological. Exposure of B. burgdorferi to weak monocarboxylic organic acids, including those detected in the blood meal of fed...

This paper deals with propionic acid extraction by tri-n-butylphosphate (TBP), a phosphorusbonded, oxygen-containing extractant dissolved in inert diluent (decane and kerosene) and a modifier (1decanol) at different temperature in the range of 298 K to 333 K. Active diluents (1-decanol) that enhance the extracting power of amines and phosphorus-bonded, oxygen-containing extractants are more fav...

Time of flight secondary ion mass spectrometry (ToF-SIMS) was used to image the lipid localization in brain tissue sections from rats fed specially processed cereals (SPC). An IonTof 5 instrument equipped with a Bi cluster ion gun was used to analyze the tissue sections. Data from 15 brain samples from control and cereal-fed rats were recorded and exported to principal components analysis (PCA)...

Phylogenetic analysis groups mammalian odorant receptors into two broad classes and numerous subfamilies. These subfamilies are proposed to reflect functional organization. Testing this idea requires an assay allowing detailed functional characterization of odorant receptors. Here we show that a variety of Class I and Class II mouse odorant receptors can be functionally expressed in Xenopus lae...

Greening is a major problem for garlic’s quality. This phenomenon leads to discoloration of the product and directly related alliinase-catalyzed conversion isoalliin into 1-propenyl-containing thiosulfates. Garlic crushing, refrigeration, storage in normal atmosphere, as well presence monocarboxylic acids, are established main factors that promote its greening. In last decades, study biochemica...

Materials and methods Expression of key metabolic markers was assessed by immunohistochemistry in 480 prostate samples and prostate cell lines. The levels of glycolytic metabolism were assessed using commercial colorimetric assays. The effect of the MCT inhibitor and thioridazine was evaluated on cell viability by using the Sulforhodamine B assay. Finally, ultra-structural studies were performe...

We have characterized the monocarboxylate permease family of Saccharomyces cerevisiae comprising five proteins. We could not find any evidence that the monocarboxylate transporter-homologous (Mch) proteins of S. cerevisiae are involved in the uptake or secretion of monocarboxylates such as lactate, pyruvate or acetate across the plasma membrane. A yeast mutant strain deleted for all five MCH ge...